About the Authors

John M. Kelley

johnkelley@post.harvard.edu

Affiliations Empathy and Relational Science Program, Psychiatry Department, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts, United States of America, Psychology Department, Endicott College, Beverly, Massachusetts, United States of America

Gordon Kraft-Todd

Affiliation Empathy and Relational Science Program, Psychiatry Department, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts, United States of America

Lidia Schapira

Affiliations Empathy and Relational Science Program, Psychiatry Department, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts, United States of America, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America

Joe Kossowsky

Affiliations Program in Placebo Studies and the Therapeutic Encounter, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America, Department of Anesthesiology, Perioperative and Pain Medicine, Boston Children's Hospital/Harvard Medical School, Boston, Massachusetts, United States of America, Department of Clinical Psychology & Psychotherapy, University of Basel, Basel, Switzerland

Helen Riess

Affiliation Empathy and Relational Science Program, Psychiatry Department, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts, United States of America

Competing Interests

Dr. Riess is a stockholder, Chief Technology Officer, and Chairman of Empathetics, LLP. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: JMK GKT LS HR. Analyzed the data: JMK GKT LS JK HR. Wrote the paper: JMK GKT LS JK HR.